On 26/02/2019 07:29, Sebastian Huber wrote:
On 25/02/2019 22:46, Chris Johns wrote:
Hi,
The patch looks like it is masking something but I am not sure.
What are the errors at -O0 the patch is attempting to resolve?
Which BSP is showing the issue?
What is the multilib ARM arch?
The ARMv7-M is affected by this.
Are these errors seen at -O2 and if not why does -O0 cause them?
With -O2 the assembler doesn't see the offending machine instructions,
they are optimized away. See the useless local variables in
rtems_debugger_target_set_vectors().
The intention is for the ARM back end to work on more than the
CortexA9 so I am
concerned with making the whole of `target_exception` dependent on CP15.
I just removed the useless assignment to local variables in
rtems_debugger_target_set_vectors() and expanded the scope of the
ARM_CP15 block. There is no functional change.
It would be good to get this issue fixed. A working -O0 build is
important since debugging -O2 code is no real fun.
--
Sebastian Huber, embedded brains GmbH
Address : Dornierstr. 4, D-82178 Puchheim, Germany
Phone : +49 89 189 47 41-16
Fax : +49 89 189 47 41-09
E-Mail : sebastian.hu...@embedded-brains.de
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Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
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